[INFO] cloning repository https://github.com/SubstrateDevAcademy/v1-exercise-1-and-2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SubstrateDevAcademy/v1-exercise-1-and-2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSubstrateDevAcademy%2Fv1-exercise-1-and-2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSubstrateDevAcademy%2Fv1-exercise-1-and-2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4682c1d139fbe59f3fa1f09efb9374db57c059c7
[INFO] checking SubstrateDevAcademy/v1-exercise-1-and-2 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSubstrateDevAcademy%2Fv1-exercise-1-and-2" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SubstrateDevAcademy/v1-exercise-1-and-2 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SubstrateDevAcademy/v1-exercise-1-and-2
[INFO] finished tweaking git repo https://github.com/SubstrateDevAcademy/v1-exercise-1-and-2
[INFO] tweaked toml for git repo https://github.com/SubstrateDevAcademy/v1-exercise-1-and-2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/SubstrateDevAcademy/v1-exercise-1-and-2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8a1fda6136092f331a2c5e1adb7aa28b3cd23f850af76a447f54c0f0cde1421
[INFO] running `Command { std: "docker" "start" "-a" "d8a1fda6136092f331a2c5e1adb7aa28b3cd23f850af76a447f54c0f0cde1421", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8a1fda6136092f331a2c5e1adb7aa28b3cd23f850af76a447f54c0f0cde1421", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8a1fda6136092f331a2c5e1adb7aa28b3cd23f850af76a447f54c0f0cde1421", kill_on_drop: false }`
[INFO] [stdout] d8a1fda6136092f331a2c5e1adb7aa28b3cd23f850af76a447f54c0f0cde1421
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b9e6f439d439b01dbb5321534fd504a11d45c2ff820e948a7a61fe7de889f10
[INFO] running `Command { std: "docker" "start" "-a" "6b9e6f439d439b01dbb5321534fd504a11d45c2ff820e948a7a61fe7de889f10", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling serde_derive v1.0.119
[INFO] [stderr]    Compiling serde v1.0.119
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking futures v0.1.30
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures-core v0.3.11
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking futures-io v0.3.11
[INFO] [stderr]     Checking futures-sink v0.3.11
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking signature v1.3.0
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking sp-std v2.0.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling parity-util-mem v0.7.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]    Compiling ref-cast v1.0.6
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking hash-db v0.15.2
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking environmental v1.1.2
[INFO] [stderr]     Checking dyn-clone v1.0.4
[INFO] [stderr]     Checking base58 v0.1.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling ahash v0.4.7
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling multimap v0.8.2
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking data-encoding v2.3.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking bs58 v0.4.0
[INFO] [stderr]     Checking bs58 v0.3.1
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking pin-project-lite v0.1.11
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.69
[INFO] [stderr]     Checking cpuid-bool v0.2.0
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.69
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.66.0
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]    Compiling prometheus v0.10.0
[INFO] [stderr]     Checking nohash-hasher v0.2.0
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking parity-send-wrapper v0.1.0
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking lru_time_cache v0.10.0
[INFO] [stderr]     Checking hex_fmt v0.3.0
[INFO] [stderr]    Compiling zstd-safe v2.0.6+zstd.1.4.7
[INFO] [stderr]     Checking atomic v0.4.6
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling wasmtime-environ v0.19.0
[INFO] [stderr]     Checking wasmparser v0.59.0
[INFO] [stderr]     Checking more-asserts v0.2.1
[INFO] [stderr]     Checking wasmparser v0.57.0
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking leb128 v0.2.4
[INFO] [stderr]     Checking object v0.19.0
[INFO] [stderr]     Checking arc-swap v1.2.0
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking bitmask v0.5.0
[INFO] [stderr]    Compiling hex-literal v0.3.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]     Checking futures-timer v2.0.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling bindgen v0.54.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]     Checking ip_network v0.3.4
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking mio-named-pipes v0.1.7
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking retain_mut v0.1.2
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling names v0.11.0
[INFO] [stderr]    Compiling platforms v0.2.1
[INFO] [stderr]    Compiling sc-consensus-slots v0.8.1
[INFO] [stderr]     Checking safe-mix v1.0.1
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]     Checking thread_local v1.1.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking futures-channel v0.3.11
[INFO] [stderr]     Checking ed25519 v1.0.3
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking trie-root v0.16.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling semver v0.6.0
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking dns-parser v0.8.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking quicksink v0.1.2
[INFO] [stderr]     Checking http v0.2.3
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]     Checking blake2b_simd v0.5.11
[INFO] [stderr]     Checking blake2s_simd v0.5.11
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking linked_hash_set v0.1.4
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking wast v31.0.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling parity-wasm v0.32.0
[INFO] [stderr]     Checking wasmi-validation v0.3.0
[INFO] [stderr]    Compiling substrate-build-script-utils v2.0.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking lru v0.6.3
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]     Checking async-channel v1.5.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling build-helper v0.1.1
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.22/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=0e1637be2d60a974 -C extra-filename=-0e1637be2d60a974 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6b9e6f439d439b01dbb5321534fd504a11d45c2ff820e948a7a61fe7de889f10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b9e6f439d439b01dbb5321534fd504a11d45c2ff820e948a7a61fe7de889f10", kill_on_drop: false }`
[INFO] [stdout] 6b9e6f439d439b01dbb5321534fd504a11d45c2ff820e948a7a61fe7de889f10